1 /* $OpenBSD: pfctl_parser.c,v 1.240 2008/06/10 20:55:02 mcbride Exp $ */
2
3 /*-
4 * SPDX-License-Identifier: BSD-2-Clause
5 *
6 * Copyright (c) 2001 Daniel Hartmeier
7 * Copyright (c) 2002,2003 Henning Brauer
8 * All rights reserved.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 *
14 * - Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * - Redistributions in binary form must reproduce the above
17 * copyright notice, this list of conditions and the following
18 * disclaimer in the documentation and/or other materials provided
19 * with the distribution.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
29 * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
31 * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
32 * POSSIBILITY OF SUCH DAMAGE.
33 *
34 */
35
36 #include <sys/cdefs.h>
37 #include <sys/types.h>
38 #include <sys/ioctl.h>
39 #include <sys/socket.h>
40 #include <sys/param.h>
41 #include <sys/proc.h>
42 #include <net/if.h>
43 #include <netinet/in.h>
44 #include <netinet/in_systm.h>
45 #include <netinet/ip.h>
46 #include <netinet/ip_icmp.h>
47 #include <netinet/icmp6.h>
48 #include <net/pfvar.h>
49 #include <arpa/inet.h>
50
51 #include <assert.h>
52 #include <search.h>
53 #include <stdio.h>
54 #include <stdlib.h>
55 #include <string.h>
56 #include <ctype.h>
57 #include <netdb.h>
58 #include <stdarg.h>
59 #include <errno.h>
60 #include <err.h>
61 #include <ifaddrs.h>
62 #include <unistd.h>
63
64 #include "pfctl_parser.h"
65 #include "pfctl.h"
66
67 void print_op (u_int8_t, const char *, const char *);
68 void print_port (u_int8_t, u_int16_t, u_int16_t, const char *, int);
69 void print_ugid (u_int8_t, unsigned, unsigned, const char *, unsigned);
70 void print_flags (u_int8_t);
71 void print_fromto(struct pf_rule_addr *, pf_osfp_t,
72 struct pf_rule_addr *, sa_family_t, u_int8_t, int, int);
73 int ifa_skip_if(const char *filter, struct node_host *p);
74
75 struct node_host *host_if(const char *, int, int *);
76 struct node_host *host_v4(const char *, int);
77 struct node_host *host_v6(const char *, int);
78 struct node_host *host_dns(const char *, int, int);
79
80 const char * const tcpflags = "FSRPAUEW";
81
82 static const struct icmptypeent icmp_type[] = {
83 { "echoreq", ICMP_ECHO },
84 { "echorep", ICMP_ECHOREPLY },
85 { "unreach", ICMP_UNREACH },
86 { "squench", ICMP_SOURCEQUENCH },
87 { "redir", ICMP_REDIRECT },
88 { "althost", ICMP_ALTHOSTADDR },
89 { "routeradv", ICMP_ROUTERADVERT },
90 { "routersol", ICMP_ROUTERSOLICIT },
91 { "timex", ICMP_TIMXCEED },
92 { "paramprob", ICMP_PARAMPROB },
93 { "timereq", ICMP_TSTAMP },
94 { "timerep", ICMP_TSTAMPREPLY },
95 { "inforeq", ICMP_IREQ },
96 { "inforep", ICMP_IREQREPLY },
97 { "maskreq", ICMP_MASKREQ },
98 { "maskrep", ICMP_MASKREPLY },
99 { "trace", ICMP_TRACEROUTE },
100 { "dataconv", ICMP_DATACONVERR },
101 { "mobredir", ICMP_MOBILE_REDIRECT },
102 { "ipv6-where", ICMP_IPV6_WHEREAREYOU },
103 { "ipv6-here", ICMP_IPV6_IAMHERE },
104 { "mobregreq", ICMP_MOBILE_REGREQUEST },
105 { "mobregrep", ICMP_MOBILE_REGREPLY },
106 { "skip", ICMP_SKIP },
107 { "photuris", ICMP_PHOTURIS }
108 };
109
110 static const struct icmptypeent icmp6_type[] = {
111 { "unreach", ICMP6_DST_UNREACH },
112 { "toobig", ICMP6_PACKET_TOO_BIG },
113 { "timex", ICMP6_TIME_EXCEEDED },
114 { "paramprob", ICMP6_PARAM_PROB },
115 { "echoreq", ICMP6_ECHO_REQUEST },
116 { "echorep", ICMP6_ECHO_REPLY },
117 { "groupqry", ICMP6_MEMBERSHIP_QUERY },
118 { "listqry", MLD_LISTENER_QUERY },
119 { "grouprep", ICMP6_MEMBERSHIP_REPORT },
120 { "listenrep", MLD_LISTENER_REPORT },
121 { "groupterm", ICMP6_MEMBERSHIP_REDUCTION },
122 { "listendone", MLD_LISTENER_DONE },
123 { "routersol", ND_ROUTER_SOLICIT },
124 { "routeradv", ND_ROUTER_ADVERT },
125 { "neighbrsol", ND_NEIGHBOR_SOLICIT },
126 { "neighbradv", ND_NEIGHBOR_ADVERT },
127 { "redir", ND_REDIRECT },
128 { "routrrenum", ICMP6_ROUTER_RENUMBERING },
129 { "wrureq", ICMP6_WRUREQUEST },
130 { "wrurep", ICMP6_WRUREPLY },
131 { "fqdnreq", ICMP6_FQDN_QUERY },
132 { "fqdnrep", ICMP6_FQDN_REPLY },
133 { "niqry", ICMP6_NI_QUERY },
134 { "nirep", ICMP6_NI_REPLY },
135 { "mtraceresp", MLD_MTRACE_RESP },
136 { "mtrace", MLD_MTRACE }
137 };
138
139 static const struct icmpcodeent icmp_code[] = {
140 { "net-unr", ICMP_UNREACH, ICMP_UNREACH_NET },
141 { "host-unr", ICMP_UNREACH, ICMP_UNREACH_HOST },
142 { "proto-unr", ICMP_UNREACH, ICMP_UNREACH_PROTOCOL },
143 { "port-unr", ICMP_UNREACH, ICMP_UNREACH_PORT },
144 { "needfrag", ICMP_UNREACH, ICMP_UNREACH_NEEDFRAG },
145 { "srcfail", ICMP_UNREACH, ICMP_UNREACH_SRCFAIL },
146 { "net-unk", ICMP_UNREACH, ICMP_UNREACH_NET_UNKNOWN },
147 { "host-unk", ICMP_UNREACH, ICMP_UNREACH_HOST_UNKNOWN },
148 { "isolate", ICMP_UNREACH, ICMP_UNREACH_ISOLATED },
149 { "net-prohib", ICMP_UNREACH, ICMP_UNREACH_NET_PROHIB },
150 { "host-prohib", ICMP_UNREACH, ICMP_UNREACH_HOST_PROHIB },
151 { "net-tos", ICMP_UNREACH, ICMP_UNREACH_TOSNET },
152 { "host-tos", ICMP_UNREACH, ICMP_UNREACH_TOSHOST },
153 { "filter-prohib", ICMP_UNREACH, ICMP_UNREACH_FILTER_PROHIB },
154 { "host-preced", ICMP_UNREACH, ICMP_UNREACH_HOST_PRECEDENCE },
155 { "cutoff-preced", ICMP_UNREACH, ICMP_UNREACH_PRECEDENCE_CUTOFF },
156 { "redir-net", ICMP_REDIRECT, ICMP_REDIRECT_NET },
157 { "redir-host", ICMP_REDIRECT, ICMP_REDIRECT_HOST },
158 { "redir-tos-net", ICMP_REDIRECT, ICMP_REDIRECT_TOSNET },
159 { "redir-tos-host", ICMP_REDIRECT, ICMP_REDIRECT_TOSHOST },
160 { "normal-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NORMAL },
161 { "common-adv", ICMP_ROUTERADVERT, ICMP_ROUTERADVERT_NOROUTE_COMMON },
162 { "transit", ICMP_TIMXCEED, ICMP_TIMXCEED_INTRANS },
163 { "reassemb", ICMP_TIMXCEED, ICMP_TIMXCEED_REASS },
164 { "badhead", ICMP_PARAMPROB, ICMP_PARAMPROB_ERRATPTR },
165 { "optmiss", ICMP_PARAMPROB, ICMP_PARAMPROB_OPTABSENT },
166 { "badlen", ICMP_PARAMPROB, ICMP_PARAMPROB_LENGTH },
167 { "unknown-ind", ICMP_PHOTURIS, ICMP_PHOTURIS_UNKNOWN_INDEX },
168 { "auth-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_AUTH_FAILED },
169 { "decrypt-fail", ICMP_PHOTURIS, ICMP_PHOTURIS_DECRYPT_FAILED }
170 };
171
172 static const struct icmpcodeent icmp6_code[] = {
173 { "admin-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADMIN },
174 { "noroute-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOROUTE },
175 { "notnbr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOTNEIGHBOR },
176 { "beyond-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_BEYONDSCOPE },
177 { "addr-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_ADDR },
178 { "port-unr", ICMP6_DST_UNREACH, ICMP6_DST_UNREACH_NOPORT },
179 { "transit", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_TRANSIT },
180 { "reassemb", ICMP6_TIME_EXCEEDED, ICMP6_TIME_EXCEED_REASSEMBLY },
181 { "badhead", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_HEADER },
182 { "nxthdr", ICMP6_PARAM_PROB, ICMP6_PARAMPROB_NEXTHEADER },
183 { "redironlink", ND_REDIRECT, ND_REDIRECT_ONLINK },
184 { "redirrouter", ND_REDIRECT, ND_REDIRECT_ROUTER }
185 };
186
187 const struct pf_timeout pf_timeouts[] = {
188 { "tcp.first", PFTM_TCP_FIRST_PACKET },
189 { "tcp.opening", PFTM_TCP_OPENING },
190 { "tcp.established", PFTM_TCP_ESTABLISHED },
191 { "tcp.closing", PFTM_TCP_CLOSING },
192 { "tcp.finwait", PFTM_TCP_FIN_WAIT },
193 { "tcp.closed", PFTM_TCP_CLOSED },
194 { "tcp.tsdiff", PFTM_TS_DIFF },
195 { "sctp.first", PFTM_SCTP_FIRST_PACKET },
196 { "sctp.opening", PFTM_SCTP_OPENING },
197 { "sctp.established", PFTM_SCTP_ESTABLISHED },
198 { "sctp.closing", PFTM_SCTP_CLOSING },
199 { "sctp.closed", PFTM_SCTP_CLOSED },
200 { "udp.first", PFTM_UDP_FIRST_PACKET },
201 { "udp.single", PFTM_UDP_SINGLE },
202 { "udp.multiple", PFTM_UDP_MULTIPLE },
203 { "icmp.first", PFTM_ICMP_FIRST_PACKET },
204 { "icmp.error", PFTM_ICMP_ERROR_REPLY },
205 { "other.first", PFTM_OTHER_FIRST_PACKET },
206 { "other.single", PFTM_OTHER_SINGLE },
207 { "other.multiple", PFTM_OTHER_MULTIPLE },
208 { "frag", PFTM_FRAG },
209 { "interval", PFTM_INTERVAL },
210 { "adaptive.start", PFTM_ADAPTIVE_START },
211 { "adaptive.end", PFTM_ADAPTIVE_END },
212 { "src.track", PFTM_SRC_NODE },
213 { NULL, 0 }
214 };
215
216 static struct hsearch_data isgroup_map;
217
218 static __attribute__((constructor)) void
pfctl_parser_init(void)219 pfctl_parser_init(void)
220 {
221 /*
222 * As hdestroy() will never be called on these tables, it will be
223 * safe to use references into the stored data as keys.
224 */
225 if (hcreate_r(0, &isgroup_map) == 0)
226 err(1, "Failed to create interface group query response map");
227 }
228
229 const struct icmptypeent *
geticmptypebynumber(u_int8_t type,sa_family_t af)230 geticmptypebynumber(u_int8_t type, sa_family_t af)
231 {
232 unsigned int i;
233
234 if (af != AF_INET6) {
235 for (i=0; i < nitems(icmp_type); i++) {
236 if (type == icmp_type[i].type)
237 return (&icmp_type[i]);
238 }
239 } else {
240 for (i=0; i < nitems(icmp6_type); i++) {
241 if (type == icmp6_type[i].type)
242 return (&icmp6_type[i]);
243 }
244 }
245 return (NULL);
246 }
247
248 const struct icmptypeent *
geticmptypebyname(char * w,sa_family_t af)249 geticmptypebyname(char *w, sa_family_t af)
250 {
251 unsigned int i;
252
253 if (af != AF_INET6) {
254 for (i=0; i < nitems(icmp_type); i++) {
255 if (!strcmp(w, icmp_type[i].name))
256 return (&icmp_type[i]);
257 }
258 } else {
259 for (i=0; i < nitems(icmp6_type); i++) {
260 if (!strcmp(w, icmp6_type[i].name))
261 return (&icmp6_type[i]);
262 }
263 }
264 return (NULL);
265 }
266
267 const struct icmpcodeent *
geticmpcodebynumber(u_int8_t type,u_int8_t code,sa_family_t af)268 geticmpcodebynumber(u_int8_t type, u_int8_t code, sa_family_t af)
269 {
270 unsigned int i;
271
272 if (af != AF_INET6) {
273 for (i=0; i < nitems(icmp_code); i++) {
274 if (type == icmp_code[i].type &&
275 code == icmp_code[i].code)
276 return (&icmp_code[i]);
277 }
278 } else {
279 for (i=0; i < nitems(icmp6_code); i++) {
280 if (type == icmp6_code[i].type &&
281 code == icmp6_code[i].code)
282 return (&icmp6_code[i]);
283 }
284 }
285 return (NULL);
286 }
287
288 const struct icmpcodeent *
geticmpcodebyname(u_long type,char * w,sa_family_t af)289 geticmpcodebyname(u_long type, char *w, sa_family_t af)
290 {
291 unsigned int i;
292
293 if (af != AF_INET6) {
294 for (i=0; i < nitems(icmp_code); i++) {
295 if (type == icmp_code[i].type &&
296 !strcmp(w, icmp_code[i].name))
297 return (&icmp_code[i]);
298 }
299 } else {
300 for (i=0; i < nitems(icmp6_code); i++) {
301 if (type == icmp6_code[i].type &&
302 !strcmp(w, icmp6_code[i].name))
303 return (&icmp6_code[i]);
304 }
305 }
306 return (NULL);
307 }
308
309 void
print_op(u_int8_t op,const char * a1,const char * a2)310 print_op(u_int8_t op, const char *a1, const char *a2)
311 {
312 if (op == PF_OP_IRG)
313 printf(" %s >< %s", a1, a2);
314 else if (op == PF_OP_XRG)
315 printf(" %s <> %s", a1, a2);
316 else if (op == PF_OP_EQ)
317 printf(" = %s", a1);
318 else if (op == PF_OP_NE)
319 printf(" != %s", a1);
320 else if (op == PF_OP_LT)
321 printf(" < %s", a1);
322 else if (op == PF_OP_LE)
323 printf(" <= %s", a1);
324 else if (op == PF_OP_GT)
325 printf(" > %s", a1);
326 else if (op == PF_OP_GE)
327 printf(" >= %s", a1);
328 else if (op == PF_OP_RRG)
329 printf(" %s:%s", a1, a2);
330 }
331
332 void
print_port(u_int8_t op,u_int16_t p1,u_int16_t p2,const char * proto,int numeric)333 print_port(u_int8_t op, u_int16_t p1, u_int16_t p2, const char *proto, int numeric)
334 {
335 char a1[6], a2[6];
336 struct servent *s;
337
338 if (!numeric)
339 s = getservbyport(p1, proto);
340 else
341 s = NULL;
342 p1 = ntohs(p1);
343 p2 = ntohs(p2);
344 snprintf(a1, sizeof(a1), "%u", p1);
345 snprintf(a2, sizeof(a2), "%u", p2);
346 printf(" port");
347 if (s != NULL && (op == PF_OP_EQ || op == PF_OP_NE))
348 print_op(op, s->s_name, a2);
349 else
350 print_op(op, a1, a2);
351 }
352
353 void
print_ugid(u_int8_t op,unsigned u1,unsigned u2,const char * t,unsigned umax)354 print_ugid(u_int8_t op, unsigned u1, unsigned u2, const char *t, unsigned umax)
355 {
356 char a1[11], a2[11];
357
358 snprintf(a1, sizeof(a1), "%u", u1);
359 snprintf(a2, sizeof(a2), "%u", u2);
360 printf(" %s", t);
361 if (u1 == umax && (op == PF_OP_EQ || op == PF_OP_NE))
362 print_op(op, "unknown", a2);
363 else
364 print_op(op, a1, a2);
365 }
366
367 void
print_flags(u_int8_t f)368 print_flags(u_int8_t f)
369 {
370 int i;
371
372 for (i = 0; tcpflags[i]; ++i)
373 if (f & (1 << i))
374 printf("%c", tcpflags[i]);
375 }
376
377 void
print_fromto(struct pf_rule_addr * src,pf_osfp_t osfp,struct pf_rule_addr * dst,sa_family_t af,u_int8_t proto,int verbose,int numeric)378 print_fromto(struct pf_rule_addr *src, pf_osfp_t osfp, struct pf_rule_addr *dst,
379 sa_family_t af, u_int8_t proto, int verbose, int numeric)
380 {
381 char buf[PF_OSFP_LEN*3];
382 if (src->addr.type == PF_ADDR_ADDRMASK &&
383 dst->addr.type == PF_ADDR_ADDRMASK &&
384 PF_AZERO(&src->addr.v.a.addr, AF_INET6) &&
385 PF_AZERO(&src->addr.v.a.mask, AF_INET6) &&
386 PF_AZERO(&dst->addr.v.a.addr, AF_INET6) &&
387 PF_AZERO(&dst->addr.v.a.mask, AF_INET6) &&
388 !src->neg && !dst->neg &&
389 !src->port_op && !dst->port_op &&
390 osfp == PF_OSFP_ANY)
391 printf(" all");
392 else {
393 printf(" from ");
394 if (src->neg)
395 printf("! ");
396 print_addr(&src->addr, af, verbose);
397 if (src->port_op)
398 print_port(src->port_op, src->port[0],
399 src->port[1],
400 proto == IPPROTO_TCP ? "tcp" : "udp",
401 numeric);
402 if (osfp != PF_OSFP_ANY)
403 printf(" os \"%s\"", pfctl_lookup_fingerprint(osfp, buf,
404 sizeof(buf)));
405
406 printf(" to ");
407 if (dst->neg)
408 printf("! ");
409 print_addr(&dst->addr, af, verbose);
410 if (dst->port_op)
411 print_port(dst->port_op, dst->port[0],
412 dst->port[1],
413 proto == IPPROTO_TCP ? "tcp" : "udp",
414 numeric);
415 }
416 }
417
418 void
print_pool(struct pfctl_pool * pool,u_int16_t p1,u_int16_t p2,sa_family_t af,int id)419 print_pool(struct pfctl_pool *pool, u_int16_t p1, u_int16_t p2,
420 sa_family_t af, int id)
421 {
422 struct pf_pooladdr *pooladdr;
423
424 if ((TAILQ_FIRST(&pool->list) != NULL) &&
425 TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
426 printf("{ ");
427 TAILQ_FOREACH(pooladdr, &pool->list, entries){
428 switch (id) {
429 case PF_NAT:
430 case PF_RDR:
431 case PF_BINAT:
432 print_addr(&pooladdr->addr, af, 0);
433 break;
434 case PF_PASS:
435 case PF_MATCH:
436 if (PF_AZERO(&pooladdr->addr.v.a.addr, af))
437 printf("%s", pooladdr->ifname);
438 else {
439 printf("(%s ", pooladdr->ifname);
440 print_addr(&pooladdr->addr, af, 0);
441 printf(")");
442 }
443 break;
444 default:
445 break;
446 }
447 if (TAILQ_NEXT(pooladdr, entries) != NULL)
448 printf(", ");
449 else if (TAILQ_NEXT(TAILQ_FIRST(&pool->list), entries) != NULL)
450 printf(" }");
451 }
452 switch (id) {
453 case PF_NAT:
454 if ((p1 != PF_NAT_PROXY_PORT_LOW ||
455 p2 != PF_NAT_PROXY_PORT_HIGH) && (p1 != 0 || p2 != 0)) {
456 if (p1 == p2)
457 printf(" port %u", p1);
458 else
459 printf(" port %u:%u", p1, p2);
460 }
461 break;
462 case PF_RDR:
463 if (p1) {
464 printf(" port %u", p1);
465 if (p2 && (p2 != p1))
466 printf(":%u", p2);
467 }
468 break;
469 default:
470 break;
471 }
472 switch (pool->opts & PF_POOL_TYPEMASK) {
473 case PF_POOL_NONE:
474 break;
475 case PF_POOL_BITMASK:
476 printf(" bitmask");
477 break;
478 case PF_POOL_RANDOM:
479 printf(" random");
480 break;
481 case PF_POOL_SRCHASH:
482 printf(" source-hash 0x%08x%08x%08x%08x",
483 pool->key.key32[0], pool->key.key32[1],
484 pool->key.key32[2], pool->key.key32[3]);
485 break;
486 case PF_POOL_ROUNDROBIN:
487 printf(" round-robin");
488 break;
489 }
490 if (pool->opts & PF_POOL_STICKYADDR)
491 printf(" sticky-address");
492 if (id == PF_NAT && p1 == 0 && p2 == 0)
493 printf(" static-port");
494 if (pool->mape.offset > 0)
495 printf(" map-e-portset %u/%u/%u",
496 pool->mape.offset, pool->mape.psidlen, pool->mape.psid);
497 }
498
499 const char * const pf_reasons[PFRES_MAX+1] = PFRES_NAMES;
500 const char * const pf_lcounters[LCNT_MAX+1] = LCNT_NAMES;
501 const char * const pf_fcounters[FCNT_MAX+1] = FCNT_NAMES;
502 const char * const pf_scounters[FCNT_MAX+1] = FCNT_NAMES;
503
504 void
print_status(struct pfctl_status * s,struct pfctl_syncookies * cookies,int opts)505 print_status(struct pfctl_status *s, struct pfctl_syncookies *cookies, int opts)
506 {
507 struct pfctl_status_counter *c;
508 char statline[80], *running;
509 time_t runtime;
510 int i;
511 char buf[PF_MD5_DIGEST_LENGTH * 2 + 1];
512 static const char hex[] = "0123456789abcdef";
513
514 runtime = time(NULL) - s->since;
515 running = s->running ? "Enabled" : "Disabled";
516
517 if (s->since) {
518 unsigned int sec, min, hrs, day = runtime;
519
520 sec = day % 60;
521 day /= 60;
522 min = day % 60;
523 day /= 60;
524 hrs = day % 24;
525 day /= 24;
526 snprintf(statline, sizeof(statline),
527 "Status: %s for %u days %.2u:%.2u:%.2u",
528 running, day, hrs, min, sec);
529 } else
530 snprintf(statline, sizeof(statline), "Status: %s", running);
531 printf("%-44s", statline);
532 switch (s->debug) {
533 case PF_DEBUG_NONE:
534 printf("%15s\n\n", "Debug: None");
535 break;
536 case PF_DEBUG_URGENT:
537 printf("%15s\n\n", "Debug: Urgent");
538 break;
539 case PF_DEBUG_MISC:
540 printf("%15s\n\n", "Debug: Misc");
541 break;
542 case PF_DEBUG_NOISY:
543 printf("%15s\n\n", "Debug: Loud");
544 break;
545 }
546
547 if (opts & PF_OPT_VERBOSE) {
548 printf("Hostid: 0x%08x\n", s->hostid);
549
550 for (i = 0; i < PF_MD5_DIGEST_LENGTH; i++) {
551 buf[i + i] = hex[s->pf_chksum[i] >> 4];
552 buf[i + i + 1] = hex[s->pf_chksum[i] & 0x0f];
553 }
554 buf[i + i] = '\0';
555 printf("Checksum: 0x%s\n\n", buf);
556 }
557
558 if (s->ifname[0] != 0) {
559 printf("Interface Stats for %-16s %5s %16s\n",
560 s->ifname, "IPv4", "IPv6");
561 printf(" %-25s %14llu %16llu\n", "Bytes In",
562 (unsigned long long)s->bcounters[0][0],
563 (unsigned long long)s->bcounters[1][0]);
564 printf(" %-25s %14llu %16llu\n", "Bytes Out",
565 (unsigned long long)s->bcounters[0][1],
566 (unsigned long long)s->bcounters[1][1]);
567 printf(" Packets In\n");
568 printf(" %-23s %14llu %16llu\n", "Passed",
569 (unsigned long long)s->pcounters[0][0][PF_PASS],
570 (unsigned long long)s->pcounters[1][0][PF_PASS]);
571 printf(" %-23s %14llu %16llu\n", "Blocked",
572 (unsigned long long)s->pcounters[0][0][PF_DROP],
573 (unsigned long long)s->pcounters[1][0][PF_DROP]);
574 printf(" Packets Out\n");
575 printf(" %-23s %14llu %16llu\n", "Passed",
576 (unsigned long long)s->pcounters[0][1][PF_PASS],
577 (unsigned long long)s->pcounters[1][1][PF_PASS]);
578 printf(" %-23s %14llu %16llu\n\n", "Blocked",
579 (unsigned long long)s->pcounters[0][1][PF_DROP],
580 (unsigned long long)s->pcounters[1][1][PF_DROP]);
581 }
582 printf("%-27s %14s %16s\n", "State Table", "Total", "Rate");
583 printf(" %-25s %14ju %14s\n", "current entries", s->states, "");
584 TAILQ_FOREACH(c, &s->fcounters, entry) {
585 printf(" %-25s %14ju ", c->name, c->counter);
586 if (runtime > 0)
587 printf("%14.1f/s\n",
588 (double)c->counter / (double)runtime);
589 else
590 printf("%14s\n", "");
591 }
592 if (opts & PF_OPT_VERBOSE) {
593 printf("Source Tracking Table\n");
594 printf(" %-25s %14ju %14s\n", "current entries",
595 s->src_nodes, "");
596 TAILQ_FOREACH(c, &s->scounters, entry) {
597 printf(" %-25s %14ju ", c->name, c->counter);
598 if (runtime > 0)
599 printf("%14.1f/s\n",
600 (double)c->counter / (double)runtime);
601 else
602 printf("%14s\n", "");
603 }
604 }
605 printf("Counters\n");
606 TAILQ_FOREACH(c, &s->counters, entry) {
607 printf(" %-25s %14ju ", c->name, c->counter);
608 if (runtime > 0)
609 printf("%14.1f/s\n",
610 (double)c->counter / (double)runtime);
611 else
612 printf("%14s\n", "");
613 }
614 if (opts & PF_OPT_VERBOSE) {
615 printf("Limit Counters\n");
616 TAILQ_FOREACH(c, &s->lcounters, entry) {
617 printf(" %-25s %14ju ", c->name, c->counter);
618 if (runtime > 0)
619 printf("%14.1f/s\n",
620 (double)c->counter / (double)runtime);
621 else
622 printf("%14s\n", "");
623 }
624
625 printf("Syncookies\n");
626 assert(cookies->mode <= PFCTL_SYNCOOKIES_ADAPTIVE);
627 printf(" %-25s %s\n", "mode",
628 PFCTL_SYNCOOKIES_MODE_NAMES[cookies->mode]);
629 printf(" %-25s %s\n", "active",
630 s->syncookies_active ? "active" : "inactive");
631 if (opts & PF_OPT_VERBOSE2) {
632 printf(" %-25s %d %%\n", "highwater", cookies->highwater);
633 printf(" %-25s %d %%\n", "lowwater", cookies->lowwater);
634 printf(" %-25s %d\n", "halfopen states", cookies->halfopen_states);
635 }
636 printf("Reassemble %24s %s\n",
637 s->reass & PF_REASS_ENABLED ? "yes" : "no",
638 s->reass & PF_REASS_NODF ? "no-df" : ""
639 );
640 }
641 }
642
643 void
print_running(struct pfctl_status * status)644 print_running(struct pfctl_status *status)
645 {
646 printf("%s\n", status->running ? "Enabled" : "Disabled");
647 }
648
649 void
print_src_node(struct pf_src_node * sn,int opts)650 print_src_node(struct pf_src_node *sn, int opts)
651 {
652 struct pf_addr_wrap aw;
653 int min, sec;
654
655 memset(&aw, 0, sizeof(aw));
656 if (sn->af == AF_INET)
657 aw.v.a.mask.addr32[0] = 0xffffffff;
658 else
659 memset(&aw.v.a.mask, 0xff, sizeof(aw.v.a.mask));
660
661 aw.v.a.addr = sn->addr;
662 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
663 printf(" -> ");
664 aw.v.a.addr = sn->raddr;
665 print_addr(&aw, sn->af, opts & PF_OPT_VERBOSE2);
666 printf(" ( states %u, connections %u, rate %u.%u/%us )\n", sn->states,
667 sn->conn, sn->conn_rate.count / 1000,
668 (sn->conn_rate.count % 1000) / 100, sn->conn_rate.seconds);
669 if (opts & PF_OPT_VERBOSE) {
670 sec = sn->creation % 60;
671 sn->creation /= 60;
672 min = sn->creation % 60;
673 sn->creation /= 60;
674 printf(" age %.2u:%.2u:%.2u", sn->creation, min, sec);
675 if (sn->states == 0) {
676 sec = sn->expire % 60;
677 sn->expire /= 60;
678 min = sn->expire % 60;
679 sn->expire /= 60;
680 printf(", expires in %.2u:%.2u:%.2u",
681 sn->expire, min, sec);
682 }
683 printf(", %llu pkts, %llu bytes",
684 #ifdef __FreeBSD__
685 (unsigned long long)(sn->packets[0] + sn->packets[1]),
686 (unsigned long long)(sn->bytes[0] + sn->bytes[1]));
687 #else
688 sn->packets[0] + sn->packets[1],
689 sn->bytes[0] + sn->bytes[1]);
690 #endif
691 switch (sn->ruletype) {
692 case PF_NAT:
693 if (sn->rule.nr != -1)
694 printf(", nat rule %u", sn->rule.nr);
695 break;
696 case PF_RDR:
697 if (sn->rule.nr != -1)
698 printf(", rdr rule %u", sn->rule.nr);
699 break;
700 case PF_PASS:
701 case PF_MATCH:
702 if (sn->rule.nr != -1)
703 printf(", filter rule %u", sn->rule.nr);
704 break;
705 }
706 printf("\n");
707 }
708 }
709
710 static void
print_eth_addr(const struct pfctl_eth_addr * a)711 print_eth_addr(const struct pfctl_eth_addr *a)
712 {
713 int i, masklen = ETHER_ADDR_LEN * 8;
714 bool seen_unset = false;
715
716 for (i = 0; i < ETHER_ADDR_LEN; i++) {
717 if (a->addr[i] != 0)
718 break;
719 }
720
721 /* Unset, so don't print anything. */
722 if (i == ETHER_ADDR_LEN)
723 return;
724
725 printf("%s%02x:%02x:%02x:%02x:%02x:%02x", a->neg ? "! " : "",
726 a->addr[0], a->addr[1], a->addr[2], a->addr[3], a->addr[4],
727 a->addr[5]);
728
729 for (i = 0; i < (ETHER_ADDR_LEN * 8); i++) {
730 bool isset = a->mask[i / 8] & (1 << i % 8);
731
732 if (! seen_unset) {
733 if (isset)
734 continue;
735 seen_unset = true;
736 masklen = i;
737 } else {
738 /* Not actually a continuous mask, so print the whole
739 * thing. */
740 if (isset)
741 break;
742 continue;
743 }
744 }
745
746 if (masklen == (ETHER_ADDR_LEN * 8))
747 return;
748
749 if (i == (ETHER_ADDR_LEN * 8)) {
750 printf("/%d", masklen);
751 return;
752 }
753
754 printf("&%02x:%02x:%02x:%02x:%02x:%02x",
755 a->mask[0], a->mask[1], a->mask[2], a->mask[3], a->mask[4],
756 a->mask[5]);
757 }
758
759 void
print_eth_rule(struct pfctl_eth_rule * r,const char * anchor_call,int rule_numbers)760 print_eth_rule(struct pfctl_eth_rule *r, const char *anchor_call,
761 int rule_numbers)
762 {
763 static const char *actiontypes[] = { "pass", "block", "", "", "", "",
764 "", "", "", "", "", "", "match" };
765
766 int i;
767
768 if (rule_numbers)
769 printf("@%u ", r->nr);
770
771 printf("ether ");
772 if (anchor_call[0]) {
773 if (anchor_call[0] == '_') {
774 printf("anchor");
775 } else
776 printf("anchor \"%s\"", anchor_call);
777 } else {
778 printf("%s", actiontypes[r->action]);
779 }
780 if (r->direction == PF_IN)
781 printf(" in");
782 else if (r->direction == PF_OUT)
783 printf(" out");
784
785 if (r->quick)
786 printf(" quick");
787 if (r->ifname[0]) {
788 if (r->ifnot)
789 printf(" on ! %s", r->ifname);
790 else
791 printf(" on %s", r->ifname);
792 }
793 if (r->bridge_to[0])
794 printf(" bridge-to %s", r->bridge_to);
795 if (r->proto)
796 printf(" proto 0x%04x", r->proto);
797
798 if (r->src.isset) {
799 printf(" from ");
800 print_eth_addr(&r->src);
801 }
802 if (r->dst.isset) {
803 printf(" to ");
804 print_eth_addr(&r->dst);
805 }
806 printf(" l3");
807 print_fromto(&r->ipsrc, PF_OSFP_ANY, &r->ipdst,
808 r->proto == ETHERTYPE_IP ? AF_INET : AF_INET6, 0,
809 0, 0);
810
811 i = 0;
812 while (r->label[i][0])
813 printf(" label \"%s\"", r->label[i++]);
814 if (r->ridentifier)
815 printf(" ridentifier %u", r->ridentifier);
816
817 if (r->qname[0])
818 printf(" queue %s", r->qname);
819 if (r->tagname[0])
820 printf(" tag %s", r->tagname);
821 if (r->match_tagname[0]) {
822 if (r->match_tag_not)
823 printf(" !");
824 printf(" tagged %s", r->match_tagname);
825 }
826 if (r->dnpipe)
827 printf(" %s %d",
828 r->dnflags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
829 r->dnpipe);
830 }
831
832 void
print_rule(struct pfctl_rule * r,const char * anchor_call,int verbose,int numeric)833 print_rule(struct pfctl_rule *r, const char *anchor_call, int verbose, int numeric)
834 {
835 static const char *actiontypes[] = { "pass", "block", "scrub",
836 "no scrub", "nat", "no nat", "binat", "no binat", "rdr", "no rdr",
837 "", "", "match"};
838 static const char *anchortypes[] = { "anchor", "anchor", "anchor",
839 "anchor", "nat-anchor", "nat-anchor", "binat-anchor",
840 "binat-anchor", "rdr-anchor", "rdr-anchor" };
841 int i, opts;
842 char *p;
843
844 if (verbose)
845 printf("@%d ", r->nr);
846 if (r->action == PF_MATCH)
847 printf("match");
848 else if (r->action > PF_NORDR)
849 printf("action(%d)", r->action);
850 else if (anchor_call[0]) {
851 p = strrchr(anchor_call, '/');
852 if (p ? p[1] == '_' : anchor_call[0] == '_')
853 printf("%s", anchortypes[r->action]);
854 else
855 printf("%s \"%s\"", anchortypes[r->action],
856 anchor_call);
857 } else {
858 printf("%s", actiontypes[r->action]);
859 if (r->natpass)
860 printf(" pass");
861 }
862 if (r->action == PF_DROP) {
863 if (r->rule_flag & PFRULE_RETURN)
864 printf(" return");
865 else if (r->rule_flag & PFRULE_RETURNRST) {
866 if (!r->return_ttl)
867 printf(" return-rst");
868 else
869 printf(" return-rst(ttl %d)", r->return_ttl);
870 } else if (r->rule_flag & PFRULE_RETURNICMP) {
871 const struct icmpcodeent *ic, *ic6;
872
873 ic = geticmpcodebynumber(r->return_icmp >> 8,
874 r->return_icmp & 255, AF_INET);
875 ic6 = geticmpcodebynumber(r->return_icmp6 >> 8,
876 r->return_icmp6 & 255, AF_INET6);
877
878 switch (r->af) {
879 case AF_INET:
880 printf(" return-icmp");
881 if (ic == NULL)
882 printf("(%u)", r->return_icmp & 255);
883 else
884 printf("(%s)", ic->name);
885 break;
886 case AF_INET6:
887 printf(" return-icmp6");
888 if (ic6 == NULL)
889 printf("(%u)", r->return_icmp6 & 255);
890 else
891 printf("(%s)", ic6->name);
892 break;
893 default:
894 printf(" return-icmp");
895 if (ic == NULL)
896 printf("(%u, ", r->return_icmp & 255);
897 else
898 printf("(%s, ", ic->name);
899 if (ic6 == NULL)
900 printf("%u)", r->return_icmp6 & 255);
901 else
902 printf("%s)", ic6->name);
903 break;
904 }
905 } else
906 printf(" drop");
907 }
908 if (r->direction == PF_IN)
909 printf(" in");
910 else if (r->direction == PF_OUT)
911 printf(" out");
912 if (r->log) {
913 printf(" log");
914 if (r->log & ~PF_LOG || r->logif) {
915 int count = 0;
916
917 printf(" (");
918 if (r->log & PF_LOG_ALL)
919 printf("%sall", count++ ? ", " : "");
920 if (r->log & PF_LOG_SOCKET_LOOKUP)
921 printf("%suser", count++ ? ", " : "");
922 if (r->logif)
923 printf("%sto pflog%u", count++ ? ", " : "",
924 r->logif);
925 printf(")");
926 }
927 }
928 if (r->quick)
929 printf(" quick");
930 if (r->ifname[0]) {
931 if (r->ifnot)
932 printf(" on ! %s", r->ifname);
933 else
934 printf(" on %s", r->ifname);
935 }
936 if (r->rt) {
937 if (r->rt == PF_ROUTETO)
938 printf(" route-to");
939 else if (r->rt == PF_REPLYTO)
940 printf(" reply-to");
941 else if (r->rt == PF_DUPTO)
942 printf(" dup-to");
943 printf(" ");
944 print_pool(&r->rpool, 0, 0, r->af, PF_PASS);
945 }
946 if (r->af) {
947 if (r->af == AF_INET)
948 printf(" inet");
949 else
950 printf(" inet6");
951 }
952 if (r->proto) {
953 const char *protoname;
954
955 if ((protoname = pfctl_proto2name(r->proto)) != NULL)
956 printf(" proto %s", protoname);
957 else
958 printf(" proto %u", r->proto);
959 }
960 print_fromto(&r->src, r->os_fingerprint, &r->dst, r->af, r->proto,
961 verbose, numeric);
962 if (r->uid.op)
963 print_ugid(r->uid.op, r->uid.uid[0], r->uid.uid[1], "user",
964 UID_MAX);
965 if (r->gid.op)
966 print_ugid(r->gid.op, r->gid.gid[0], r->gid.gid[1], "group",
967 GID_MAX);
968 if (r->flags || r->flagset) {
969 printf(" flags ");
970 print_flags(r->flags);
971 printf("/");
972 print_flags(r->flagset);
973 } else if ((r->action == PF_PASS || r->action == PF_MATCH) &&
974 (!r->proto || r->proto == IPPROTO_TCP) &&
975 !(r->rule_flag & PFRULE_FRAGMENT) &&
976 !anchor_call[0] && r->keep_state)
977 printf(" flags any");
978 if (r->type) {
979 const struct icmptypeent *it;
980
981 it = geticmptypebynumber(r->type-1, r->af);
982 if (r->af != AF_INET6)
983 printf(" icmp-type");
984 else
985 printf(" icmp6-type");
986 if (it != NULL)
987 printf(" %s", it->name);
988 else
989 printf(" %u", r->type-1);
990 if (r->code) {
991 const struct icmpcodeent *ic;
992
993 ic = geticmpcodebynumber(r->type-1, r->code-1, r->af);
994 if (ic != NULL)
995 printf(" code %s", ic->name);
996 else
997 printf(" code %u", r->code-1);
998 }
999 }
1000 if (r->tos)
1001 printf(" tos 0x%2.2x", r->tos);
1002 if (r->prio)
1003 printf(" prio %u", r->prio == PF_PRIO_ZERO ? 0 : r->prio);
1004 if (r->scrub_flags & PFSTATE_SETMASK) {
1005 char *comma = "";
1006 printf(" set (");
1007 if (r->scrub_flags & PFSTATE_SETPRIO) {
1008 if (r->set_prio[0] == r->set_prio[1])
1009 printf("%s prio %u", comma, r->set_prio[0]);
1010 else
1011 printf("%s prio(%u, %u)", comma, r->set_prio[0],
1012 r->set_prio[1]);
1013 comma = ",";
1014 }
1015 if (r->scrub_flags & PFSTATE_SETTOS) {
1016 printf("%s tos 0x%2.2x", comma, r->set_tos);
1017 comma = ",";
1018 }
1019 printf(" )");
1020 }
1021 if (!r->keep_state && r->action == PF_PASS && !anchor_call[0])
1022 printf(" no state");
1023 else if (r->keep_state == PF_STATE_NORMAL)
1024 printf(" keep state");
1025 else if (r->keep_state == PF_STATE_MODULATE)
1026 printf(" modulate state");
1027 else if (r->keep_state == PF_STATE_SYNPROXY)
1028 printf(" synproxy state");
1029 if (r->prob) {
1030 char buf[20];
1031
1032 snprintf(buf, sizeof(buf), "%f", r->prob*100.0/(UINT_MAX+1.0));
1033 for (i = strlen(buf)-1; i > 0; i--) {
1034 if (buf[i] == '0')
1035 buf[i] = '\0';
1036 else {
1037 if (buf[i] == '.')
1038 buf[i] = '\0';
1039 break;
1040 }
1041 }
1042 printf(" probability %s%%", buf);
1043 }
1044 opts = 0;
1045 if (r->max_states || r->max_src_nodes || r->max_src_states)
1046 opts = 1;
1047 if (r->rule_flag & PFRULE_NOSYNC)
1048 opts = 1;
1049 if (r->rule_flag & PFRULE_SRCTRACK)
1050 opts = 1;
1051 if (r->rule_flag & PFRULE_IFBOUND)
1052 opts = 1;
1053 if (r->rule_flag & PFRULE_STATESLOPPY)
1054 opts = 1;
1055 for (i = 0; !opts && i < PFTM_MAX; ++i)
1056 if (r->timeout[i])
1057 opts = 1;
1058 if (opts) {
1059 printf(" (");
1060 if (r->max_states) {
1061 printf("max %u", r->max_states);
1062 opts = 0;
1063 }
1064 if (r->rule_flag & PFRULE_NOSYNC) {
1065 if (!opts)
1066 printf(", ");
1067 printf("no-sync");
1068 opts = 0;
1069 }
1070 if (r->rule_flag & PFRULE_SRCTRACK) {
1071 if (!opts)
1072 printf(", ");
1073 printf("source-track");
1074 if (r->rule_flag & PFRULE_RULESRCTRACK)
1075 printf(" rule");
1076 else
1077 printf(" global");
1078 opts = 0;
1079 }
1080 if (r->max_src_states) {
1081 if (!opts)
1082 printf(", ");
1083 printf("max-src-states %u", r->max_src_states);
1084 opts = 0;
1085 }
1086 if (r->max_src_conn) {
1087 if (!opts)
1088 printf(", ");
1089 printf("max-src-conn %u", r->max_src_conn);
1090 opts = 0;
1091 }
1092 if (r->max_src_conn_rate.limit) {
1093 if (!opts)
1094 printf(", ");
1095 printf("max-src-conn-rate %u/%u",
1096 r->max_src_conn_rate.limit,
1097 r->max_src_conn_rate.seconds);
1098 opts = 0;
1099 }
1100 if (r->max_src_nodes) {
1101 if (!opts)
1102 printf(", ");
1103 printf("max-src-nodes %u", r->max_src_nodes);
1104 opts = 0;
1105 }
1106 if (r->overload_tblname[0]) {
1107 if (!opts)
1108 printf(", ");
1109 printf("overload <%s>", r->overload_tblname);
1110 if (r->flush)
1111 printf(" flush");
1112 if (r->flush & PF_FLUSH_GLOBAL)
1113 printf(" global");
1114 }
1115 if (r->rule_flag & PFRULE_IFBOUND) {
1116 if (!opts)
1117 printf(", ");
1118 printf("if-bound");
1119 opts = 0;
1120 }
1121 if (r->rule_flag & PFRULE_STATESLOPPY) {
1122 if (!opts)
1123 printf(", ");
1124 printf("sloppy");
1125 opts = 0;
1126 }
1127 for (i = 0; i < PFTM_MAX; ++i)
1128 if (r->timeout[i]) {
1129 int j;
1130
1131 if (!opts)
1132 printf(", ");
1133 opts = 0;
1134 for (j = 0; pf_timeouts[j].name != NULL;
1135 ++j)
1136 if (pf_timeouts[j].timeout == i)
1137 break;
1138 printf("%s %u", pf_timeouts[j].name == NULL ?
1139 "inv.timeout" : pf_timeouts[j].name,
1140 r->timeout[i]);
1141 }
1142 printf(")");
1143 }
1144 if (r->allow_opts)
1145 printf(" allow-opts");
1146 if (r->rule_flag & PFRULE_FRAGMENT)
1147 printf(" fragment");
1148 if (r->action == PF_SCRUB) {
1149 /* Scrub flags for old-style scrub. */
1150 if (r->rule_flag & PFRULE_NODF)
1151 printf(" no-df");
1152 if (r->rule_flag & PFRULE_RANDOMID)
1153 printf(" random-id");
1154 if (r->min_ttl)
1155 printf(" min-ttl %d", r->min_ttl);
1156 if (r->max_mss)
1157 printf(" max-mss %d", r->max_mss);
1158 if (r->rule_flag & PFRULE_SET_TOS)
1159 printf(" set-tos 0x%2.2x", r->set_tos);
1160 if (r->rule_flag & PFRULE_REASSEMBLE_TCP)
1161 printf(" reassemble tcp");
1162 /* The PFRULE_FRAGMENT_NOREASS is set on all rules by default! */
1163 printf(" fragment %sreassemble",
1164 r->rule_flag & PFRULE_FRAGMENT_NOREASS ? "no " : "");
1165 } else if (r->scrub_flags & PFSTATE_SCRUBMASK || r->min_ttl || r->max_mss) {
1166 /* Scrub actions on normal rules. */
1167 printf(" scrub(");
1168 if (r->scrub_flags & PFSTATE_NODF)
1169 printf(" no-df");
1170 if (r->scrub_flags & PFSTATE_RANDOMID)
1171 printf(" random-id");
1172 if (r->min_ttl)
1173 printf(" min-ttl %d", r->min_ttl);
1174 if (r->scrub_flags & PFSTATE_SETTOS)
1175 printf(" set-tos 0x%2.2x", r->set_tos);
1176 if (r->scrub_flags & PFSTATE_SCRUB_TCP)
1177 printf(" reassemble tcp");
1178 if (r->max_mss)
1179 printf(" max-mss %d", r->max_mss);
1180 printf(")");
1181 }
1182 i = 0;
1183 while (r->label[i][0])
1184 printf(" label \"%s\"", r->label[i++]);
1185 if (r->ridentifier)
1186 printf(" ridentifier %u", r->ridentifier);
1187 /* Only dnrpipe as we might do (0, 42) to only queue return traffic. */
1188 if (r->dnrpipe)
1189 printf(" %s(%d, %d)",
1190 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1191 r->dnpipe, r->dnrpipe);
1192 else if (r->dnpipe)
1193 printf(" %s %d",
1194 r->free_flags & PFRULE_DN_IS_PIPE ? "dnpipe" : "dnqueue",
1195 r->dnpipe);
1196 if (r->qname[0] && r->pqname[0])
1197 printf(" queue(%s, %s)", r->qname, r->pqname);
1198 else if (r->qname[0])
1199 printf(" queue %s", r->qname);
1200 if (r->tagname[0])
1201 printf(" tag %s", r->tagname);
1202 if (r->match_tagname[0]) {
1203 if (r->match_tag_not)
1204 printf(" !");
1205 printf(" tagged %s", r->match_tagname);
1206 }
1207 if (r->rtableid != -1)
1208 printf(" rtable %u", r->rtableid);
1209 if (r->divert.port) {
1210 #ifdef __FreeBSD__
1211 printf(" divert-to %u", ntohs(r->divert.port));
1212 #else
1213 if (PF_AZERO(&r->divert.addr, r->af)) {
1214 printf(" divert-reply");
1215 } else {
1216 /* XXX cut&paste from print_addr */
1217 char buf[48];
1218
1219 printf(" divert-to ");
1220 if (inet_ntop(r->af, &r->divert.addr, buf,
1221 sizeof(buf)) == NULL)
1222 printf("?");
1223 else
1224 printf("%s", buf);
1225 printf(" port %u", ntohs(r->divert.port));
1226 }
1227 #endif
1228 }
1229 if (!anchor_call[0] && (r->action == PF_NAT ||
1230 r->action == PF_BINAT || r->action == PF_RDR)) {
1231 printf(" -> ");
1232 print_pool(&r->rpool, r->rpool.proxy_port[0],
1233 r->rpool.proxy_port[1], r->af, r->action);
1234 }
1235 }
1236
1237 void
print_tabledef(const char * name,int flags,int addrs,struct node_tinithead * nodes)1238 print_tabledef(const char *name, int flags, int addrs,
1239 struct node_tinithead *nodes)
1240 {
1241 struct node_tinit *ti, *nti;
1242 struct node_host *h;
1243
1244 printf("table <%s>", name);
1245 if (flags & PFR_TFLAG_CONST)
1246 printf(" const");
1247 if (flags & PFR_TFLAG_PERSIST)
1248 printf(" persist");
1249 if (flags & PFR_TFLAG_COUNTERS)
1250 printf(" counters");
1251 SIMPLEQ_FOREACH(ti, nodes, entries) {
1252 if (ti->file) {
1253 printf(" file \"%s\"", ti->file);
1254 continue;
1255 }
1256 printf(" {");
1257 for (;;) {
1258 for (h = ti->host; h != NULL; h = h->next) {
1259 printf(h->not ? " !" : " ");
1260 print_addr(&h->addr, h->af, 0);
1261 }
1262 nti = SIMPLEQ_NEXT(ti, entries);
1263 if (nti != NULL && nti->file == NULL)
1264 ti = nti; /* merge lists */
1265 else
1266 break;
1267 }
1268 printf(" }");
1269 }
1270 if (addrs && SIMPLEQ_EMPTY(nodes))
1271 printf(" { }");
1272 printf("\n");
1273 }
1274
1275 int
parse_flags(char * s)1276 parse_flags(char *s)
1277 {
1278 char *p, *q;
1279 u_int8_t f = 0;
1280
1281 for (p = s; *p; p++) {
1282 if ((q = strchr(tcpflags, *p)) == NULL)
1283 return -1;
1284 else
1285 f |= 1 << (q - tcpflags);
1286 }
1287 return (f ? f : PF_TH_ALL);
1288 }
1289
1290 void
set_ipmask(struct node_host * h,u_int8_t b)1291 set_ipmask(struct node_host *h, u_int8_t b)
1292 {
1293 struct pf_addr *m, *n;
1294 int i, j = 0;
1295
1296 m = &h->addr.v.a.mask;
1297 memset(m, 0, sizeof(*m));
1298
1299 while (b >= 32) {
1300 m->addr32[j++] = 0xffffffff;
1301 b -= 32;
1302 }
1303 for (i = 31; i > 31-b; --i)
1304 m->addr32[j] |= (1 << i);
1305 if (b)
1306 m->addr32[j] = htonl(m->addr32[j]);
1307
1308 /* Mask off bits of the address that will never be used. */
1309 n = &h->addr.v.a.addr;
1310 if (h->addr.type == PF_ADDR_ADDRMASK)
1311 for (i = 0; i < 4; i++)
1312 n->addr32[i] = n->addr32[i] & m->addr32[i];
1313 }
1314
1315 int
check_netmask(struct node_host * h,sa_family_t af)1316 check_netmask(struct node_host *h, sa_family_t af)
1317 {
1318 struct node_host *n = NULL;
1319 struct pf_addr *m;
1320
1321 for (n = h; n != NULL; n = n->next) {
1322 if (h->addr.type == PF_ADDR_TABLE)
1323 continue;
1324 m = &h->addr.v.a.mask;
1325 /* netmasks > 32 bit are invalid on v4 */
1326 if (af == AF_INET &&
1327 (m->addr32[1] || m->addr32[2] || m->addr32[3])) {
1328 fprintf(stderr, "netmask %u invalid for IPv4 address\n",
1329 unmask(m, AF_INET6));
1330 return (1);
1331 }
1332 }
1333 return (0);
1334 }
1335
1336 struct node_host *
gen_dynnode(struct node_host * h,sa_family_t af)1337 gen_dynnode(struct node_host *h, sa_family_t af)
1338 {
1339 struct node_host *n;
1340 struct pf_addr *m;
1341
1342 if (h->addr.type != PF_ADDR_DYNIFTL)
1343 return (NULL);
1344
1345 if ((n = calloc(1, sizeof(*n))) == NULL)
1346 return (NULL);
1347 bcopy(h, n, sizeof(*n));
1348 n->ifname = NULL;
1349 n->next = NULL;
1350 n->tail = NULL;
1351
1352 /* fix up netmask */
1353 m = &n->addr.v.a.mask;
1354 if (af == AF_INET && unmask(m, AF_INET6) > 32)
1355 set_ipmask(n, 32);
1356
1357 return (n);
1358 }
1359
1360 /* interface lookup routines */
1361
1362 static struct node_host *iftab;
1363
1364 /*
1365 * Retrieve the list of groups this interface is a member of and make sure
1366 * each group is in the group map.
1367 */
1368 static void
ifa_add_groups_to_map(char * ifa_name)1369 ifa_add_groups_to_map(char *ifa_name)
1370 {
1371 int s, len;
1372 struct ifgroupreq ifgr;
1373 struct ifg_req *ifg;
1374
1375 s = get_query_socket();
1376
1377 /* Get size of group list for this interface */
1378 memset(&ifgr, 0, sizeof(ifgr));
1379 strlcpy(ifgr.ifgr_name, ifa_name, IFNAMSIZ);
1380 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1381 err(1, "SIOCGIFGROUP");
1382
1383 /* Retrieve group list for this interface */
1384 len = ifgr.ifgr_len;
1385 ifgr.ifgr_groups =
1386 (struct ifg_req *)calloc(len / sizeof(struct ifg_req),
1387 sizeof(struct ifg_req));
1388 if (ifgr.ifgr_groups == NULL)
1389 err(1, "calloc");
1390 if (ioctl(s, SIOCGIFGROUP, (caddr_t)&ifgr) == -1)
1391 err(1, "SIOCGIFGROUP");
1392
1393 ifg = ifgr.ifgr_groups;
1394 for (; ifg && len >= sizeof(struct ifg_req); ifg++) {
1395 len -= sizeof(struct ifg_req);
1396 if (strcmp(ifg->ifgrq_group, "all")) {
1397 ENTRY item;
1398 ENTRY *ret_item;
1399 int *answer;
1400
1401 item.key = ifg->ifgrq_group;
1402 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0) {
1403 struct ifgroupreq ifgr2;
1404
1405 /* Don't know the answer yet */
1406 if ((answer = malloc(sizeof(int))) == NULL)
1407 err(1, "malloc");
1408
1409 bzero(&ifgr2, sizeof(ifgr2));
1410 strlcpy(ifgr2.ifgr_name, ifg->ifgrq_group,
1411 sizeof(ifgr2.ifgr_name));
1412 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr2) == 0)
1413 *answer = ifgr2.ifgr_len;
1414 else
1415 *answer = 0;
1416
1417 item.key = strdup(ifg->ifgrq_group);
1418 item.data = answer;
1419 if (hsearch_r(item, ENTER, &ret_item,
1420 &isgroup_map) == 0)
1421 err(1, "interface group query response"
1422 " map insert");
1423 }
1424 }
1425 }
1426 free(ifgr.ifgr_groups);
1427 }
1428
1429 void
ifa_load(void)1430 ifa_load(void)
1431 {
1432 struct ifaddrs *ifap, *ifa;
1433 struct node_host *n = NULL, *h = NULL;
1434
1435 if (getifaddrs(&ifap) < 0)
1436 err(1, "getifaddrs");
1437
1438 for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
1439 if (!(ifa->ifa_addr->sa_family == AF_INET ||
1440 ifa->ifa_addr->sa_family == AF_INET6 ||
1441 ifa->ifa_addr->sa_family == AF_LINK))
1442 continue;
1443 n = calloc(1, sizeof(struct node_host));
1444 if (n == NULL)
1445 err(1, "address: calloc");
1446 n->af = ifa->ifa_addr->sa_family;
1447 n->ifa_flags = ifa->ifa_flags;
1448 #ifdef __KAME__
1449 if (n->af == AF_INET6 &&
1450 IN6_IS_ADDR_LINKLOCAL(&((struct sockaddr_in6 *)
1451 ifa->ifa_addr)->sin6_addr) &&
1452 ((struct sockaddr_in6 *)ifa->ifa_addr)->sin6_scope_id ==
1453 0) {
1454 struct sockaddr_in6 *sin6;
1455
1456 sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
1457 sin6->sin6_scope_id = sin6->sin6_addr.s6_addr[2] << 8 |
1458 sin6->sin6_addr.s6_addr[3];
1459 sin6->sin6_addr.s6_addr[2] = 0;
1460 sin6->sin6_addr.s6_addr[3] = 0;
1461 }
1462 #endif
1463 n->ifindex = 0;
1464 if (n->af == AF_INET) {
1465 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in *)
1466 ifa->ifa_addr)->sin_addr.s_addr,
1467 sizeof(struct in_addr));
1468 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in *)
1469 ifa->ifa_netmask)->sin_addr.s_addr,
1470 sizeof(struct in_addr));
1471 if (ifa->ifa_broadaddr != NULL)
1472 memcpy(&n->bcast, &((struct sockaddr_in *)
1473 ifa->ifa_broadaddr)->sin_addr.s_addr,
1474 sizeof(struct in_addr));
1475 if (ifa->ifa_dstaddr != NULL)
1476 memcpy(&n->peer, &((struct sockaddr_in *)
1477 ifa->ifa_dstaddr)->sin_addr.s_addr,
1478 sizeof(struct in_addr));
1479 } else if (n->af == AF_INET6) {
1480 memcpy(&n->addr.v.a.addr, &((struct sockaddr_in6 *)
1481 ifa->ifa_addr)->sin6_addr.s6_addr,
1482 sizeof(struct in6_addr));
1483 memcpy(&n->addr.v.a.mask, &((struct sockaddr_in6 *)
1484 ifa->ifa_netmask)->sin6_addr.s6_addr,
1485 sizeof(struct in6_addr));
1486 if (ifa->ifa_broadaddr != NULL)
1487 memcpy(&n->bcast, &((struct sockaddr_in6 *)
1488 ifa->ifa_broadaddr)->sin6_addr.s6_addr,
1489 sizeof(struct in6_addr));
1490 if (ifa->ifa_dstaddr != NULL)
1491 memcpy(&n->peer, &((struct sockaddr_in6 *)
1492 ifa->ifa_dstaddr)->sin6_addr.s6_addr,
1493 sizeof(struct in6_addr));
1494 n->ifindex = ((struct sockaddr_in6 *)
1495 ifa->ifa_addr)->sin6_scope_id;
1496 } else if (n->af == AF_LINK) {
1497 ifa_add_groups_to_map(ifa->ifa_name);
1498 }
1499 if ((n->ifname = strdup(ifa->ifa_name)) == NULL)
1500 err(1, "ifa_load: strdup");
1501 n->next = NULL;
1502 n->tail = n;
1503 if (h == NULL)
1504 h = n;
1505 else {
1506 h->tail->next = n;
1507 h->tail = n;
1508 }
1509 }
1510
1511 iftab = h;
1512 freeifaddrs(ifap);
1513 }
1514
1515 static int
get_socket_domain(void)1516 get_socket_domain(void)
1517 {
1518 int sdom;
1519
1520 sdom = AF_UNSPEC;
1521 #ifdef WITH_INET6
1522 if (sdom == AF_UNSPEC && feature_present("inet6"))
1523 sdom = AF_INET6;
1524 #endif
1525 #ifdef WITH_INET
1526 if (sdom == AF_UNSPEC && feature_present("inet"))
1527 sdom = AF_INET;
1528 #endif
1529 if (sdom == AF_UNSPEC)
1530 sdom = AF_LINK;
1531
1532 return (sdom);
1533 }
1534
1535 int
get_query_socket(void)1536 get_query_socket(void)
1537 {
1538 static int s = -1;
1539
1540 if (s == -1) {
1541 if ((s = socket(get_socket_domain(), SOCK_DGRAM, 0)) == -1)
1542 err(1, "socket");
1543 }
1544
1545 return (s);
1546 }
1547
1548 /*
1549 * Returns the response len if the name is a group, otherwise returns 0.
1550 */
1551 static int
is_a_group(char * name)1552 is_a_group(char *name)
1553 {
1554 ENTRY item;
1555 ENTRY *ret_item;
1556
1557 item.key = name;
1558 if (hsearch_r(item, FIND, &ret_item, &isgroup_map) == 0)
1559 return (0);
1560
1561 return (*(int *)ret_item->data);
1562 }
1563
1564 struct node_host *
ifa_exists(char * ifa_name)1565 ifa_exists(char *ifa_name)
1566 {
1567 struct node_host *n;
1568
1569 if (iftab == NULL)
1570 ifa_load();
1571
1572 /* check whether this is a group */
1573 if (is_a_group(ifa_name)) {
1574 /* fake a node_host */
1575 if ((n = calloc(1, sizeof(*n))) == NULL)
1576 err(1, "calloc");
1577 if ((n->ifname = strdup(ifa_name)) == NULL)
1578 err(1, "strdup");
1579 return (n);
1580 }
1581
1582 for (n = iftab; n; n = n->next) {
1583 if (n->af == AF_LINK && !strncmp(n->ifname, ifa_name, IFNAMSIZ))
1584 return (n);
1585 }
1586
1587 return (NULL);
1588 }
1589
1590 struct node_host *
ifa_grouplookup(char * ifa_name,int flags)1591 ifa_grouplookup(char *ifa_name, int flags)
1592 {
1593 struct ifg_req *ifg;
1594 struct ifgroupreq ifgr;
1595 int s, len;
1596 struct node_host *n, *h = NULL;
1597
1598 s = get_query_socket();
1599 len = is_a_group(ifa_name);
1600 if (len == 0)
1601 return (NULL);
1602 bzero(&ifgr, sizeof(ifgr));
1603 strlcpy(ifgr.ifgr_name, ifa_name, sizeof(ifgr.ifgr_name));
1604 ifgr.ifgr_len = len;
1605 if ((ifgr.ifgr_groups = calloc(1, len)) == NULL)
1606 err(1, "calloc");
1607 if (ioctl(s, SIOCGIFGMEMB, (caddr_t)&ifgr) == -1)
1608 err(1, "SIOCGIFGMEMB");
1609
1610 for (ifg = ifgr.ifgr_groups; ifg && len >= sizeof(struct ifg_req);
1611 ifg++) {
1612 len -= sizeof(struct ifg_req);
1613 if ((n = ifa_lookup(ifg->ifgrq_member, flags)) == NULL)
1614 continue;
1615 if (h == NULL)
1616 h = n;
1617 else {
1618 h->tail->next = n;
1619 h->tail = n->tail;
1620 }
1621 }
1622 free(ifgr.ifgr_groups);
1623
1624 return (h);
1625 }
1626
1627 struct node_host *
ifa_lookup(char * ifa_name,int flags)1628 ifa_lookup(char *ifa_name, int flags)
1629 {
1630 struct node_host *p = NULL, *h = NULL, *n = NULL;
1631 int got4 = 0, got6 = 0;
1632 const char *last_if = NULL;
1633
1634 /* first load iftab and isgroup_map */
1635 if (iftab == NULL)
1636 ifa_load();
1637
1638 if ((h = ifa_grouplookup(ifa_name, flags)) != NULL)
1639 return (h);
1640
1641 if (!strncmp(ifa_name, "self", IFNAMSIZ))
1642 ifa_name = NULL;
1643
1644 for (p = iftab; p; p = p->next) {
1645 if (ifa_skip_if(ifa_name, p))
1646 continue;
1647 if ((flags & PFI_AFLAG_BROADCAST) && p->af != AF_INET)
1648 continue;
1649 if ((flags & PFI_AFLAG_BROADCAST) &&
1650 !(p->ifa_flags & IFF_BROADCAST))
1651 continue;
1652 if ((flags & PFI_AFLAG_PEER) &&
1653 !(p->ifa_flags & IFF_POINTOPOINT))
1654 continue;
1655 if ((flags & PFI_AFLAG_NETWORK) && p->ifindex > 0)
1656 continue;
1657 if (last_if == NULL || strcmp(last_if, p->ifname))
1658 got4 = got6 = 0;
1659 last_if = p->ifname;
1660 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET && got4)
1661 continue;
1662 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 &&
1663 IN6_IS_ADDR_LINKLOCAL(&p->addr.v.a.addr.v6))
1664 continue;
1665 if ((flags & PFI_AFLAG_NOALIAS) && p->af == AF_INET6 && got6)
1666 continue;
1667 if (p->af == AF_INET)
1668 got4 = 1;
1669 else
1670 got6 = 1;
1671 n = calloc(1, sizeof(struct node_host));
1672 if (n == NULL)
1673 err(1, "address: calloc");
1674 n->af = p->af;
1675 if (flags & PFI_AFLAG_BROADCAST)
1676 memcpy(&n->addr.v.a.addr, &p->bcast,
1677 sizeof(struct pf_addr));
1678 else if (flags & PFI_AFLAG_PEER)
1679 memcpy(&n->addr.v.a.addr, &p->peer,
1680 sizeof(struct pf_addr));
1681 else
1682 memcpy(&n->addr.v.a.addr, &p->addr.v.a.addr,
1683 sizeof(struct pf_addr));
1684 if (flags & PFI_AFLAG_NETWORK)
1685 set_ipmask(n, unmask(&p->addr.v.a.mask, n->af));
1686 else {
1687 if (n->af == AF_INET) {
1688 if (p->ifa_flags & IFF_LOOPBACK &&
1689 p->ifa_flags & IFF_LINK1)
1690 memcpy(&n->addr.v.a.mask,
1691 &p->addr.v.a.mask,
1692 sizeof(struct pf_addr));
1693 else
1694 set_ipmask(n, 32);
1695 } else
1696 set_ipmask(n, 128);
1697 }
1698 n->ifindex = p->ifindex;
1699 n->ifname = strdup(p->ifname);
1700
1701 n->next = NULL;
1702 n->tail = n;
1703 if (h == NULL)
1704 h = n;
1705 else {
1706 h->tail->next = n;
1707 h->tail = n;
1708 }
1709 }
1710 return (h);
1711 }
1712
1713 int
ifa_skip_if(const char * filter,struct node_host * p)1714 ifa_skip_if(const char *filter, struct node_host *p)
1715 {
1716 int n;
1717
1718 if (p->af != AF_INET && p->af != AF_INET6)
1719 return (1);
1720 if (filter == NULL || !*filter)
1721 return (0);
1722 if (!strcmp(p->ifname, filter))
1723 return (0); /* exact match */
1724 n = strlen(filter);
1725 if (n < 1 || n >= IFNAMSIZ)
1726 return (1); /* sanity check */
1727 if (filter[n-1] >= '0' && filter[n-1] <= '9')
1728 return (1); /* only do exact match in that case */
1729 if (strncmp(p->ifname, filter, n))
1730 return (1); /* prefix doesn't match */
1731 return (p->ifname[n] < '0' || p->ifname[n] > '9');
1732 }
1733
1734
1735 struct node_host *
host(const char * s)1736 host(const char *s)
1737 {
1738 struct node_host *h = NULL;
1739 int mask, v4mask, v6mask, cont = 1;
1740 char *p, *q, *ps;
1741
1742 if ((p = strrchr(s, '/')) != NULL) {
1743 mask = strtol(p+1, &q, 0);
1744 if (!q || *q || mask > 128 || q == (p+1)) {
1745 fprintf(stderr, "invalid netmask '%s'\n", p);
1746 return (NULL);
1747 }
1748 if ((ps = malloc(strlen(s) - strlen(p) + 1)) == NULL)
1749 err(1, "host: malloc");
1750 strlcpy(ps, s, strlen(s) - strlen(p) + 1);
1751 v4mask = v6mask = mask;
1752 } else {
1753 if ((ps = strdup(s)) == NULL)
1754 err(1, "host: strdup");
1755 v4mask = 32;
1756 v6mask = 128;
1757 mask = -1;
1758 }
1759
1760 /* IPv4 address? */
1761 if (cont && (h = host_v4(s, mask)) != NULL)
1762 cont = 0;
1763
1764 /* IPv6 address? */
1765 if (cont && (h = host_v6(ps, v6mask)) != NULL)
1766 cont = 0;
1767
1768 /* interface with this name exists? */
1769 /* expensive with thousands of interfaces - prioritze IPv4/6 check */
1770 if (cont && (h = host_if(ps, mask, &cont)) != NULL)
1771 cont = 0;
1772
1773 /* dns lookup */
1774 if (cont && (h = host_dns(ps, v4mask, v6mask)) != NULL)
1775 cont = 0;
1776 free(ps);
1777
1778 if (h == NULL || cont == 1) {
1779 fprintf(stderr, "no IP address found for %s\n", s);
1780 return (NULL);
1781 }
1782 return (h);
1783 }
1784
1785 struct node_host *
host_if(const char * s,int mask,int * cont)1786 host_if(const char *s, int mask, int *cont)
1787 {
1788 struct node_host *n, *h = NULL;
1789 char *p, *ps;
1790 int flags = 0;
1791
1792 if ((ps = strdup(s)) == NULL)
1793 err(1, "host_if: strdup");
1794 while ((p = strrchr(ps, ':')) != NULL) {
1795 if (!strcmp(p+1, "network"))
1796 flags |= PFI_AFLAG_NETWORK;
1797 else if (!strcmp(p+1, "broadcast"))
1798 flags |= PFI_AFLAG_BROADCAST;
1799 else if (!strcmp(p+1, "peer"))
1800 flags |= PFI_AFLAG_PEER;
1801 else if (!strcmp(p+1, "0"))
1802 flags |= PFI_AFLAG_NOALIAS;
1803 else {
1804 free(ps);
1805 return (NULL);
1806 }
1807 *p = '\0';
1808 *cont = 0;
1809 }
1810 if (flags & (flags - 1) & PFI_AFLAG_MODEMASK) { /* Yep! */
1811 fprintf(stderr, "illegal combination of interface modifiers\n");
1812 free(ps);
1813 return (NULL);
1814 }
1815 if ((flags & (PFI_AFLAG_NETWORK|PFI_AFLAG_BROADCAST)) && mask > -1) {
1816 fprintf(stderr, "network or broadcast lookup, but "
1817 "extra netmask given\n");
1818 free(ps);
1819 return (NULL);
1820 }
1821 if (ifa_exists(ps) || !strncmp(ps, "self", IFNAMSIZ)) {
1822 /* interface with this name exists */
1823 h = ifa_lookup(ps, flags);
1824 for (n = h; n != NULL && mask > -1; n = n->next)
1825 set_ipmask(n, mask);
1826 }
1827
1828 free(ps);
1829 return (h);
1830 }
1831
1832 struct node_host *
host_v4(const char * s,int mask)1833 host_v4(const char *s, int mask)
1834 {
1835 struct node_host *h = NULL;
1836 struct in_addr ina;
1837 int bits = 32;
1838
1839 memset(&ina, 0, sizeof(struct in_addr));
1840 if (strrchr(s, '/') != NULL) {
1841 if ((bits = inet_net_pton(AF_INET, s, &ina, sizeof(ina))) == -1)
1842 return (NULL);
1843 } else {
1844 if (inet_pton(AF_INET, s, &ina) != 1)
1845 return (NULL);
1846 }
1847
1848 h = calloc(1, sizeof(struct node_host));
1849 if (h == NULL)
1850 err(1, "address: calloc");
1851 h->ifname = NULL;
1852 h->af = AF_INET;
1853 h->addr.v.a.addr.addr32[0] = ina.s_addr;
1854 set_ipmask(h, bits);
1855 h->next = NULL;
1856 h->tail = h;
1857
1858 return (h);
1859 }
1860
1861 struct node_host *
host_v6(const char * s,int mask)1862 host_v6(const char *s, int mask)
1863 {
1864 struct addrinfo hints, *res;
1865 struct node_host *h = NULL;
1866
1867 memset(&hints, 0, sizeof(hints));
1868 hints.ai_family = AF_INET6;
1869 hints.ai_socktype = SOCK_DGRAM; /*dummy*/
1870 hints.ai_flags = AI_NUMERICHOST;
1871 if (getaddrinfo(s, "0", &hints, &res) == 0) {
1872 h = calloc(1, sizeof(struct node_host));
1873 if (h == NULL)
1874 err(1, "address: calloc");
1875 h->ifname = NULL;
1876 h->af = AF_INET6;
1877 memcpy(&h->addr.v.a.addr,
1878 &((struct sockaddr_in6 *)res->ai_addr)->sin6_addr,
1879 sizeof(h->addr.v.a.addr));
1880 h->ifindex =
1881 ((struct sockaddr_in6 *)res->ai_addr)->sin6_scope_id;
1882 set_ipmask(h, mask);
1883 freeaddrinfo(res);
1884 h->next = NULL;
1885 h->tail = h;
1886 }
1887
1888 return (h);
1889 }
1890
1891 struct node_host *
host_dns(const char * s,int v4mask,int v6mask)1892 host_dns(const char *s, int v4mask, int v6mask)
1893 {
1894 struct addrinfo hints, *res0, *res;
1895 struct node_host *n, *h = NULL;
1896 int error, noalias = 0;
1897 int got4 = 0, got6 = 0;
1898 char *p, *ps;
1899
1900 if ((ps = strdup(s)) == NULL)
1901 err(1, "host_dns: strdup");
1902 if ((p = strrchr(ps, ':')) != NULL && !strcmp(p, ":0")) {
1903 noalias = 1;
1904 *p = '\0';
1905 }
1906 memset(&hints, 0, sizeof(hints));
1907 hints.ai_family = PF_UNSPEC;
1908 hints.ai_socktype = SOCK_STREAM; /* DUMMY */
1909 error = getaddrinfo(ps, NULL, &hints, &res0);
1910 if (error) {
1911 free(ps);
1912 return (h);
1913 }
1914
1915 for (res = res0; res; res = res->ai_next) {
1916 if (res->ai_family != AF_INET &&
1917 res->ai_family != AF_INET6)
1918 continue;
1919 if (noalias) {
1920 if (res->ai_family == AF_INET) {
1921 if (got4)
1922 continue;
1923 got4 = 1;
1924 } else {
1925 if (got6)
1926 continue;
1927 got6 = 1;
1928 }
1929 }
1930 n = calloc(1, sizeof(struct node_host));
1931 if (n == NULL)
1932 err(1, "host_dns: calloc");
1933 n->ifname = NULL;
1934 n->af = res->ai_family;
1935 if (res->ai_family == AF_INET) {
1936 memcpy(&n->addr.v.a.addr,
1937 &((struct sockaddr_in *)
1938 res->ai_addr)->sin_addr.s_addr,
1939 sizeof(struct in_addr));
1940 set_ipmask(n, v4mask);
1941 } else {
1942 memcpy(&n->addr.v.a.addr,
1943 &((struct sockaddr_in6 *)
1944 res->ai_addr)->sin6_addr.s6_addr,
1945 sizeof(struct in6_addr));
1946 n->ifindex =
1947 ((struct sockaddr_in6 *)
1948 res->ai_addr)->sin6_scope_id;
1949 set_ipmask(n, v6mask);
1950 }
1951 n->next = NULL;
1952 n->tail = n;
1953 if (h == NULL)
1954 h = n;
1955 else {
1956 h->tail->next = n;
1957 h->tail = n;
1958 }
1959 }
1960 freeaddrinfo(res0);
1961 free(ps);
1962
1963 return (h);
1964 }
1965
1966 /*
1967 * convert a hostname to a list of addresses and put them in the given buffer.
1968 * test:
1969 * if set to 1, only simple addresses are accepted (no netblock, no "!").
1970 */
1971 int
append_addr(struct pfr_buffer * b,char * s,int test)1972 append_addr(struct pfr_buffer *b, char *s, int test)
1973 {
1974 char *r;
1975 struct node_host *h, *n;
1976 int rv, not = 0;
1977
1978 for (r = s; *r == '!'; r++)
1979 not = !not;
1980 if ((n = host(r)) == NULL) {
1981 errno = 0;
1982 return (-1);
1983 }
1984 rv = append_addr_host(b, n, test, not);
1985 do {
1986 h = n;
1987 n = n->next;
1988 free(h);
1989 } while (n != NULL);
1990 return (rv);
1991 }
1992
1993 /*
1994 * same as previous function, but with a pre-parsed input and the ability
1995 * to "negate" the result. Does not free the node_host list.
1996 * not:
1997 * setting it to 1 is equivalent to adding "!" in front of parameter s.
1998 */
1999 int
append_addr_host(struct pfr_buffer * b,struct node_host * n,int test,int not)2000 append_addr_host(struct pfr_buffer *b, struct node_host *n, int test, int not)
2001 {
2002 int bits;
2003 struct pfr_addr addr;
2004
2005 do {
2006 bzero(&addr, sizeof(addr));
2007 addr.pfra_not = n->not ^ not;
2008 addr.pfra_af = n->af;
2009 addr.pfra_net = unmask(&n->addr.v.a.mask, n->af);
2010 switch (n->af) {
2011 case AF_INET:
2012 addr.pfra_ip4addr.s_addr = n->addr.v.a.addr.addr32[0];
2013 bits = 32;
2014 break;
2015 case AF_INET6:
2016 memcpy(&addr.pfra_ip6addr, &n->addr.v.a.addr.v6,
2017 sizeof(struct in6_addr));
2018 bits = 128;
2019 break;
2020 default:
2021 errno = EINVAL;
2022 return (-1);
2023 }
2024 if ((test && (not || addr.pfra_net != bits)) ||
2025 addr.pfra_net > bits) {
2026 errno = EINVAL;
2027 return (-1);
2028 }
2029 if (pfr_buf_add(b, &addr))
2030 return (-1);
2031 } while ((n = n->next) != NULL);
2032
2033 return (0);
2034 }
2035
2036 int
pfctl_add_trans(struct pfr_buffer * buf,int rs_num,const char * anchor)2037 pfctl_add_trans(struct pfr_buffer *buf, int rs_num, const char *anchor)
2038 {
2039 struct pfioc_trans_e trans;
2040
2041 bzero(&trans, sizeof(trans));
2042 trans.rs_num = rs_num;
2043 if (strlcpy(trans.anchor, anchor,
2044 sizeof(trans.anchor)) >= sizeof(trans.anchor))
2045 errx(1, "pfctl_add_trans: strlcpy");
2046
2047 return pfr_buf_add(buf, &trans);
2048 }
2049
2050 u_int32_t
pfctl_get_ticket(struct pfr_buffer * buf,int rs_num,const char * anchor)2051 pfctl_get_ticket(struct pfr_buffer *buf, int rs_num, const char *anchor)
2052 {
2053 struct pfioc_trans_e *p;
2054
2055 PFRB_FOREACH(p, buf)
2056 if (rs_num == p->rs_num && !strcmp(anchor, p->anchor))
2057 return (p->ticket);
2058 errx(1, "pfctl_get_ticket: assertion failed");
2059 }
2060
2061 int
pfctl_trans(int dev,struct pfr_buffer * buf,u_long cmd,int from)2062 pfctl_trans(int dev, struct pfr_buffer *buf, u_long cmd, int from)
2063 {
2064 struct pfioc_trans trans;
2065
2066 bzero(&trans, sizeof(trans));
2067 trans.size = buf->pfrb_size - from;
2068 trans.esize = sizeof(struct pfioc_trans_e);
2069 trans.array = ((struct pfioc_trans_e *)buf->pfrb_caddr) + from;
2070 return ioctl(dev, cmd, &trans);
2071 }
2072